May 6, 2011: NBA fans around the world have been wondering what is wrong with NBA star Pau Gasol. Throughout the playoffs Pau's game seems to be off.

Well according to a MediaTakeOut.com snitch - it's because Pau and his LONGTIME GIRLFRIEND and FIANCE Sylvia broke up . . . and he blames a TEAMMATE for him getting DUMPED!

The insider, who is affiliated with the Lakers, told MediaTakeOut.com that Pau's girlfriend SYLVIA and a teammates wife (who will remain nameless) became good friends. And two weeks ago Pau was ROCKED by news that his girlfriend/fiance DUMPED HIM.

The snitch told MediaTakeOut.com, "Pau thinks that [TEAMMATES] wife was behind it. Sylvia didn't have many friends and he's convinced that [wife] either is behind it, or could have talked Sylvia out of it." And word is that when Pau's TEAMMATE [the husband] tried to talk to Pau about it, the two got into an ARGUMENT - with each saying some very RECKLESS THINGS about each others LADIES.

So now Pau and THIS teammate are no longer speaking to each other. And their ON COURT chemistry is definitely off.